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Cisco Unified CM Remote Code Execution Vulnerability (CVE-2026-20045)

First seen 29 Jan 2026, 00:28 UTC • Securityboulevard

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A remote code execution vulnerability, identified as CVE-2026-20045, affects Cisco Unity Connection and Cisco Webex Calling Dedicated Instance. The issue arises from improper handling of input, allowing attackers to execute arbitrary code. Organizations using these Cisco products are advised to assess their systems for potential exploitation.

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CISA Alerts on Exploited Cisco Unified CM Zero-Day Vulnerability CVE-2026-20045 Critical SSRF Vulnerability in Cisco Unified CM Exposes Enterprises to Root Access Critical RCE Vulnerability in BeyondTrust Software Requires Immediate Patching Cisco Unified CM Zero-Day Vulnerability Under Attack

Cisco Unified CM Remote Code Execution Vulnerability (CVE-2026-20045)

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